So I created this build when I was bored of using spirit generators on Nightmare, and so far it seems to have boosted my damage. The only things to keep in mind are that you ALWAYS keep your mantra on, and NEVER spam abilities. Here are the explanations for each ability:

This spell is another one of those "deal some damage, gtfo monsters, not much spirit" spells, like blinding flash. Really you can use any spell you want, but low spirit is best. Even so, if you can keep your spirit up with Wave of Light or 7 Sided, congrats to you and have fun with them!

Anyway, this build is a lot of fun and can do a lot of damage if mastered, and is also a welcome difference (to me) from the monotonous "spam the spirit generators then spam everything else!" kinda feel to the monk.